County Water Resource Plans

To ensure that our residents and businesses are equipped to respond to evolving water resources needs, Chester County is leading updates to the Watersheds Plan and the County-wide Stormwater Management Plan.

Watersheds Plan Opens in new window


Thoughtful, science-based planning for water resource management is critical for balancing what nature provides with what our communities need, both today and in the future. Chester County recently adopted a new County-wide integrated water resources plan, Watersheds 2045. Learn more ...

StormwaterPlan_Rounded_Short
The County-wide Stormwater Management Plan aims to reduce stormwater runoff and improve water quality in all watersheds of Chester County. In 2022, the County developed a new model ordinance for municipal adoption. PA Act 167 requires all Chester County municipalities, both MS4 and non-MS4 permittees, to adopt ordinances consistent with the County's model ordinance. Learn more ...

Other Approved Stormwater Management Plans

Prior to the development of the County-wide Stormwater Management Plan in 2013, plans were developed for specific watersheds. Plans for Chester Creek, Crum Creek, Darby Creek, and Valley Creek watersheds are found here.

Watersheds Plans as of 2015 Opens in new window

This is a compilation of plans and studies in Chester County conducted by various entities and agencies, some plans dating as far back as 1952. The type of plans included range from water resources inventory studies to restoration plans to watershed conservation plans.